[Parakeet] unnecessary warning & auto mapping

[eustlb]

What does this PR do?

• fixes Parakeet and PerceptionLM are not registered correctly for auto #41387
• and fixes warning

🚨 Config not found for parakeet. You can manually add it to HARDCODED_CONFIG_FOR_MODELS in utils/auto_docstring.py

• and fixes auto tokenizer mapping that was not updated when moving from ParakeetCTCTokenizer to ParakeetTokenizerFast

---

What triggers the unexpected warning:

@auto_doctring on a class (not on a method) (here ParakeetPreTrainedModel, ParakeetEncoder, ParakeetForCTC) triggers auto_method_docstring call with parent_class kwargs setted, that will trigger looking for a config class with the model name parakeet (extracted from modeling_parakeet.py). Yet we don't have a config class for parakeet alone, we have ParakeetEncoderConfig and ParakeetCTCConfig.

To solve, let's add "parakeet": "ParakeetCTCConfig" to HARDCODED_CONFIG_FOR_MODELS.

Note

When other Parakeet variants will be integrated ParakeetForTDT and ParakeetForRNTT, then we might want to add a global ParakeetConfig that encapsulate them all

[HuggingFaceDocBuilderDev]

The docs for this PR live here. All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.

[github-actions]

[For maintainers] Suggested jobs to run (before merge)

run-slow: auto

[ArthurZucker]

LGTM